Commit 650a898342b3fa21c392c06a2b7010fa19823efa
Committed by
Linus Torvalds
1 parent
5b35e8e58a
Exists in
master
and in
7 other branches
[PATCH] vfs: define new lookup flag for chdir
In the "operation does permission checking" model used by fuse, chdir permission is not checked, since there's no chdir method. For this case set a lookup flag, which will be passed to ->permission(), so fuse can distinguish it from permission checks for other operations. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Showing 3 changed files with 4 additions and 2 deletions Side-by-side Diff
fs/fuse/dir.c
... | ... | @@ -776,7 +776,7 @@ |
776 | 776 | if ((mask & MAY_EXEC) && !S_ISDIR(mode) && !(mode & S_IXUGO)) |
777 | 777 | return -EACCES; |
778 | 778 | |
779 | - if (nd && (nd->flags & LOOKUP_ACCESS)) | |
779 | + if (nd && (nd->flags & (LOOKUP_ACCESS | LOOKUP_CHDIR))) | |
780 | 780 | return fuse_access(inode, mask); |
781 | 781 | return 0; |
782 | 782 | } |
fs/open.c
include/linux/namei.h
... | ... | @@ -54,6 +54,7 @@ |
54 | 54 | #define LOOKUP_OPEN (0x0100) |
55 | 55 | #define LOOKUP_CREATE (0x0200) |
56 | 56 | #define LOOKUP_ACCESS (0x0400) |
57 | +#define LOOKUP_CHDIR (0x0800) | |
57 | 58 | |
58 | 59 | extern int FASTCALL(__user_walk(const char __user *, unsigned, struct nameidata *)); |
59 | 60 | extern int FASTCALL(__user_walk_fd(int dfd, const char __user *, unsigned, struct nameidata *)); |